Abobe flash player 21 PPAPI is not replacing the older version

I have tried to install the Abobe flash player 21 PPAPI using the silent command" -silent " .The software is not getting installed.I tried by removing the silent command

it is prompting a dialog box to run the uninstaller . I just want to install the Abobe flash player 21 PPAPI offline installer without running any uninstaller.How can i do it ??is there any procedure or silent command to perform it